91168      Mumps Virus Antibody, IgM
Specimen:
  Collect: One 7.5 mL SST  
  Submit: 1 mL (Min:0.5 mL) Serum. Submit Refrigerated. Submit in a Standard Transport Tube.  
  Special Handling: Avoid Repeated Freeze/Thaw Cycles
Separate from cells ASAP
If acute and convalescent samples being submitted, label as such. Convalescent sample must be received in lab within 30 days. 
  Rejection Criteria: Grossly Hemolyzed Samples
Grossly Lipemic Samples 
  Stability: Ambient: 2 Day(s); Refrigerated: 2 Week(s); Frozen: 12 Month(s); Incubated: Unacceptable 
Methodology: Enzyme-Linked ImmunoSorbent Assay (ELISA) 
Performed: Monday, Wednesday, Friday 
Reported: 2-5 Day(s) 
CPT Codes:
86735 - Mumps Antibody
Interpretive Data:
Reference Range:
<= 0.90 IV = Negative
0.91-1.09 IV = Equivocal
>= 1.10 IV = Positive: Presence of IgM antibody to mumps virus detected and may indicate a current or recent infection.
Low levels of IgM antibodies may occassionally persist for more than 12 months post-infection or immunization.